Search Only Images Download this image Portrait of Wilhelm Wirtinger No info available for book source. Image ID: SIL-SIL14-w004-04-000001 Supplied Caption: Portrait of Wilhelm Wirtinger. Photograph [post card]. Autograph signature. Original Caption: Autograph signature. Tags: mathematics, Wirtinger, Wilhelm (1865-1945) Categories: Science Collection(s): Scientific Identity No Copyright - United States Request copy of image How can I use this image?